Catalytic converter Surface of metal: S409 and S304 Used in precious metal rare earth compound oxide compound coordination function Causes in exhaust HC has oxidation, Rated: 3. 8L/ 4. 25lbs Inlet/ Outlet: 1. 75" / 1. 75" Or 2" / 2" Or 2. 25" / 2. 25" Or 2. 5" / 2. 5" Or 3" / 3" Length: 7" 5" ...